0001599298 2026-09-28 2026-09-28 false 0001599298 --12-31 8-K 2026-09-28 Summit Therapeutics Inc. DE 001-36866 37-1979717 601 Brickell Key Drive Suite 1000 Miami FL 33131 (305) 203-2034 false false false false Common stock, $0.01 par value per share SMMT NASDAQ false